Question

Write an activity to show that light is necessary for photosynthesis

Answer 1

Answer:

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Answer 2

Answer:

   Take a plant with destarched leaf.

   Leaf is partially covered with black paper on which a design is cut.

   Expose this plant to sunlight for few hours and perform a starch test with iodine solution.

Observation-

   Covered leaf part shows brown colouration.

   Exposed leaf shows blue-black colour.

Result- Starch is present in the exposed leaf.

Conclusion- Leaf exposed to sunlight give iodine test, proving that sunlight is necessary for photosynthesis.